Merge branch 'akpm' (patches from Andrew)

Merge fourth set of updates from Andrew Morton:

 - the rest of lib/

 - checkpatch updates

 - a few misc things

 - kasan: kernel address sanitizer

 - the rtc tree

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (108 commits)
  ARM: mvebu: enable Armada 38x RTC driver in mvebu_v7_defconfig
  ARM: mvebu: add Device Tree description of RTC on Armada 38x
  MAINTAINERS: add the RTC driver for the Armada38x
  drivers/rtc/rtc-armada38x: add a new RTC driver for recent mvebu SoCs
  rtc: armada38x: add the device tree binding documentation
  rtc: rtc-ab-b5ze-s3: add sub-minute alarm support
  rtc: add support for Abracon AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip
  of: add vendor prefix for Abracon Corporation
  drivers/rtc/rtc-rk808.c: fix rtc time reading issue
  drivers/rtc/rtc-isl12057.c: constify struct regmap_config
  drivers/rtc/rtc-at91sam9.c: constify struct regmap_config
  drivers/rtc/rtc-imxdi.c: add more known register bits
  drivers/rtc/rtc-imxdi.c: trivial clean up code
  ARM: mvebu: ISL12057 rtc chip can now wake up RN102, RN102 and RN2120
  rtc: rtc-isl12057: add isil,irq2-can-wakeup-machine property for in-tree users
  drivers/rtc/rtc-isl12057.c: add alarm support to Intersil ISL12057 RTC driver
  drivers/rtc/rtc-pcf2123.c: add support for devicetree
  kprobes: makes kprobes/enabled works correctly for optimized kprobes.
  kprobes: set kprobes_all_disarmed earlier to enable re-optimization.
  init: remove CONFIG_INIT_FALLBACK
  ...

1 files changed, 94 insertions, 0 deletions

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 602d2081e713..b235c96167d3 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -794,6 +794,87 @@ char *hex_string(char *buf, char *end, u8 *addr, struct printf_spec spec,
 }
 
 static noinline_for_stack
+char *bitmap_string(char *buf, char *end, unsigned long *bitmap,
+		    struct printf_spec spec, const char *fmt)
+{
+	const int CHUNKSZ = 32;
+	int nr_bits = max_t(int, spec.field_width, 0);
+	int i, chunksz;
+	bool first = true;
+
+	/* reused to print numbers */
+	spec = (struct printf_spec){ .flags = SMALL | ZEROPAD, .base = 16 };
+
+	chunksz = nr_bits & (CHUNKSZ - 1);
+	if (chunksz == 0)
+		chunksz = CHUNKSZ;
+
+	i = ALIGN(nr_bits, CHUNKSZ) - CHUNKSZ;
+	for (; i >= 0; i -= CHUNKSZ) {
+		u32 chunkmask, val;
+		int word, bit;
+
+		chunkmask = ((1ULL << chunksz) - 1);
+		word = i / BITS_PER_LONG;
+		bit = i % BITS_PER_LONG;
+		val = (bitmap[word] >> bit) & chunkmask;
+
+		if (!first) {
+			if (buf < end)
+				*buf = ',';
+			buf++;
+		}
+		first = false;
+
+		spec.field_width = DIV_ROUND_UP(chunksz, 4);
+		buf = number(buf, end, val, spec);
+
+		chunksz = CHUNKSZ;
+	}
+	return buf;
+}
+
+static noinline_for_stack
+char *bitmap_list_string(char *buf, char *end, unsigned long *bitmap,
+			 struct printf_spec spec, const char *fmt)
+{
+	int nr_bits = max_t(int, spec.field_width, 0);
+	/* current bit is 'cur', most recently seen range is [rbot, rtop] */
+	int cur, rbot, rtop;
+	bool first = true;
+
+	/* reused to print numbers */
+	spec = (struct printf_spec){ .base = 10 };
+
+	rbot = cur = find_first_bit(bitmap, nr_bits);
+	while (cur < nr_bits) {
+		rtop = cur;
+		cur = find_next_bit(bitmap, nr_bits, cur + 1);
+		if (cur < nr_bits && cur <= rtop + 1)
+			continue;
+
+		if (!first) {
+			if (buf < end)
+				*buf = ',';
+			buf++;
+		}
+		first = false;
+
+		buf = number(buf, end, rbot, spec);
+		if (rbot < rtop) {
+			if (buf < end)
+				*buf = '-';
+			buf++;
+
+			buf = number(buf, end, rtop, spec);
+		}
+
+		rbot = cur;
+	}
+	return buf;
+}
+
+static noinline_for_stack
 char *mac_address_string(char *buf, char *end, u8 *addr,
 			 struct printf_spec spec, const char *fmt)
 {
@@ -1258,6 +1339,10 @@ int kptr_restrict __read_mostly;
  * - 'B' For backtraced symbolic direct pointers with offset
  * - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref]
  * - 'r' For raw struct resource, e.g., [mem 0x0-0x1f flags 0x201]
+ * - 'b[l]' For a bitmap, the number of bits is determined by the field
+ *       width which must be explicitly specified either as part of the
+ *       format string '%32b[l]' or through '%*b[l]', [l] selects
+ *       range-list format instead of hex format
  * - 'M' For a 6-byte MAC address, it prints the address in the
  *       usual colon-separated hex notation
  * - 'm' For a 6-byte MAC address, it prints the hex address without colons
@@ -1354,6 +1439,13 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 		return resource_string(buf, end, ptr, spec, fmt);
 	case 'h':
 		return hex_string(buf, end, ptr, spec, fmt);
+	case 'b':
+		switch (fmt[1]) {
+		case 'l':
+			return bitmap_list_string(buf, end, ptr, spec, fmt);
+		default:
+			return bitmap_string(buf, end, ptr, spec, fmt);
+		}
 	case 'M':			/* Colon separated: 00:01:02:03:04:05 */
 	case 'm':			/* Contiguous: 000102030405 */
 					/* [mM]F (FDDI) */
@@ -1689,6 +1781,8 @@ qualifier:
  * %pB output the name of a backtrace symbol with its offset
  * %pR output the address range in a struct resource with decoded flags
  * %pr output the address range in a struct resource with raw flags
+ * %pb output the bitmap with field width as the number of bits
+ * %pbl output the bitmap as range list with field width as the number of bits
  * %pM output a 6-byte MAC address with colons
  * %pMR output a 6-byte MAC address with colons in reversed order
  * %pMF output a 6-byte MAC address with dashes